| 1. |
- Thompson, Paul M., et al.
(författare)
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The ENIGMA Consortium : large-scale collaborative analyses of neuroimaging and genetic data
- 2014
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Ingår i: BRAIN IMAGING BEHAV. - : Springer Science and Business Media LLC. - 1931-7557 .- 1931-7565. ; 8:2, s. 153-182
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Tidskriftsartikel (refereegranskat)abstract
- The Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) Consortium is a collaborative network of researchers working together on a range of large-scale studies that integrate data from 70 institutions worldwide. Organized into Working Groups that tackle questions in neuroscience, genetics, and medicine, ENIGMA studies have analyzed neuroimaging data from over 12,826 subjects. In addition, data from 12,171 individuals were provided by the CHARGE consortium for replication of findings, in a total of 24,997 subjects. By meta-analyzing results from many sites, ENIGMA has detected factors that affect the brain that no individual site could detect on its own, and that require larger numbers of subjects than any individual neuroimaging study has currently collected. ENIGMA's first project was a genome-wide association study identifying common variants in the genome associated with hippocampal volume or intracranial volume. Continuing work is exploring genetic associations with subcortical volumes (ENIGMA2) and white matter microstructure (ENIGMA-DTI). Working groups also focus on understanding how schizophrenia, bipolar illness, major depression and attention deficit/hyperactivity disorder (ADHD) affect the brain. We review the current progress of the ENIGMA Consortium, along with challenges and unexpected discoveries made on the way.
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| 2. |
- Cappiello, Marco, et al.
(författare)
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Conormal distributions in the Shubin calculus of pseudodifferential operators
- 2018
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Ingår i: Journal of Mathematical Physics. - : American Institute of Physics (AIP). - 0022-2488 .- 1089-7658. ; 59:2
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Tidskriftsartikel (refereegranskat)abstract
- We characterize the Schwartz kernels of pseudodifferential operators of Shubin type by means of a Fourier-Bros-Iagolnitzer transform. Based on this, we introduce as a generalization a new class of tempered distributions called Shubin conormal distributions. We study their transformation behavior, normal forms, and microlocal properties.
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| 3. |
- Cappiello, Marco, et al.
(författare)
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Lagrangian Distributions and Fourier Integral Operators with Quadratic Phase Functions and Shubin Amplitudes
- 2020
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Ingår i: Publications of the Research Institute for Mathematical Sciences. - : European Mathematical Society Publishing House. - 0034-5318 .- 1663-4926. ; 56:3, s. 561-602
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Tidskriftsartikel (refereegranskat)abstract
- We study Fourier integral operators with Shubin amplitudes and quadratic phase functions associated to twisted graph Lagrangians with respect to symplectic matrices. We factorize such an operator as a pseudodifferential operator and a metaplectic operator. Extending the conormal distributions adapted to the Shubin calculus, we define an adapted notion of Lagrangian tempered distribution. We show that the kernels of Fourier integral operators are identical to Lagrangian distributions with respect to twisted graph Lagrangians.
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| 4. |
- Cappiello, Marco, et al.
(författare)
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Shubin type Fourier integral operators and evolution equations
- 2020
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Ingår i: Journal of Pseudo-Differential Operators and Applications. - : Springer. - 1662-9981 .- 1662-999X. ; 11:1, s. 119-139
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Tidskriftsartikel (refereegranskat)abstract
- We study the Cauchy problem for an evolution equation of Schrödinger type. The Hamiltonian is the Weyl quantization of a real homogeneous quadratic form with a pseudodifferential perturbation of negative order from Shubin’s class. We prove that the propagator is a Fourier integral operator of Shubin type of order zero. Using results for such operators and corresponding Lagrangian distributions, we study the propagator and the solution, and derive phase space estimates for them.
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| 5. |
- Schulz, Robert, et al.
(författare)
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Is the future of peer review automated?
- 2022
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Ingår i: BMC Research Notes. - : Springer Nature. - 1756-0500. ; 15:1
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The rising rate of preprints and publications, combined with persistent inadequate reporting practices and problems with study design and execution, have strained the traditional peer review system. Automated screening tools could potentially enhance peer review by helping authors, journal editors, and reviewers to identify beneficial practices and common problems in preprints or submitted manuscripts. Tools can screen many papers quickly, and may be particularly helpful in assessing compliance with journal policies and with straightforward items in reporting guidelines. However, existing tools cannot understand or interpret the paper in the context of the scientific literature. Tools cannot yet determine whether the methods used are suitable to answer the research question, or whether the data support the authors' conclusions. Editors and peer reviewers are essential for assessing journal fit and the overall quality of a paper, including the experimental design, the soundness of the study's conclusions, potential impact and innovation. Automated screening tools cannot replace peer review, but may aid authors, reviewers, and editors in improving scientific papers. Strategies for responsible use of automated tools in peer review may include setting performance criteria for tools, transparently reporting tool performance and use, and training users to interpret reports.
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| 6. |
- Schulz, René, et al.
(författare)
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Microlocal properties of Shubin pseudodifferential and localization operators
- 2016
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Ingår i: Journal of Pseudo-Differential Operators and Applications. - : Springer Science and Business Media LLC. - 1662-9981 .- 1662-999X. ; 7:1, s. 91-111
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Tidskriftsartikel (refereegranskat)abstract
- We investigate global microlocal properties of localization operators and Shubin pseudodifferential operators. The microlocal regularity is measured in terms of a scale of Shubin-type Sobolev spaces. In particular, we prove microlocality and microellipticity of these operators.
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| 7. |
- Schulz, René, et al.
(författare)
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The Equality of the homogeneous and the Gabor wave front set
- 2017
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Ingår i: Communications in Partial Differential Equations. - : Taylor & Francis. - 0360-5302 .- 1532-4133. ; 42:5, s. 703-730
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Tidskriftsartikel (refereegranskat)abstract
- We prove that Hörmander’s global wave front set and Nakamura’s homogeneous wave front set of a tempered distribution coincide. In addition we construct a tempered distribution with a given wave front set, and we develop a pseudodifferential calculus adapted to Nakamura’s homogeneous wave front set.
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